Police launched a probe into the destruction of forestry, an offense which can be punished with hefty fines or imprisonment for up to five years.

The young man, whose identity was not disclosed, has not yet been officially charged.

Earlier in the day, the State Emergency Service said firefighters and rescue teams continued to put out fires at two sites near Rahivka, adding that radiation levels in the capital, Kyiv, and the Kyiv region were within the normal range. The total area affected by the fire near Rahivka was reported as five hectares.

A day earlier, Ukraine's emergency authorities said that the fire had been extinguished near the villages of Volodymyrivka and Zhovtneve, close to the exclusion zone. More than 130 firefighters, three aircraft, and 21 vehicles were deployed on April 4 to battle the fire. ■